n. [ Micro- + millimeter. ] The millionth part of a meter. The millionth part of a meter is now termed a micron, and the word micromillimeter does not conform to the IS use of the prefix micro-. [ 1913 Webster +PJC ]
{ } n. [ F. millimètre; milli- milli- + mètre. See 3d Meter. ] A lineal measure in the metric system, containing the thousandth part of a meter; equal to .03937 of an inch. See 3d Meter. [ 1913 Webster ]
[ほじょたんい, hojotan'i](n) (1) (obs) prefixed unit of measurement (i.e. millimeter, kilogram, etc.); (2) (See 組立単位) supplementary SI unit (radian and steradian)[Add to Longdo]